Bibliography
Bibliography of Vitality: 
   
    
              Endangerment of lesser-known tribal languages: with focus on central and southern India
      
  
Bibliography of Locations: 
   
    
              Hammarström, Harald & Forkel, Robert & Haspelmath, Martin & Bank, Sebastian (eds.) Glottolog 4.5. https://glottolog.org/. Accessed 16 December 2021. 
      
  
Bibliography of Context: 
   
  
  
  
  
  
  
  
  
    
              Endangerment of lesser-known tribal languages: with focus on central and southern India